Ukraine has gone through the theft of its children to deny them their Ukrainian culture and heritage and raise them as Russians. That's genocide. Also, the Holodomor was a genocide even though it was based in part, on class, not ethnicity.
https://humanrightsclinic.law.harvard.edu/intent-to-destroy-why-the-world-must-name-and-confront-russias-genocidal-war-in-ukraine/
https://en.wikipedia.org/wiki/Holodomor